Multivariable logistic regression model of measures associated with a positive viral culture from pediatric samples
| Variable | Adjusted odds ratio (95% CI) |
|---|---|
| Cycle threshold* | 0.81 (0.69–0.94) |
| Symptoms to test time | 0.90 (0.64–1.27) |
| Age | 1.13 (0.97–1.31) |
| Sex | 2.18 (0.48–9.87) |
| RNAseP† | 0.69 (0.48–1.00) |
Note: CI = confidence interval, RT-PCR = reverse transcription polymerase chain reaction, SARS-CoV-2 = severe acute respiratory syndrome coronavirus 2.
↵* Cycle threshold is a semiquantitative measure of how much genetic material is present in the initial sample. If more RT-PCR cycles are required to detect SARS-CoV-2, then less viral RNA was present in the sample.
↵† Cycle threshold values for human RNAse P gene, an endogenous internal amplification control, were used as a marker of quality of the nasopharyngeal sample.